DatKid20 Wrote:Please don't recommend a i5-4670k build.
An i7-4770K should be right up your alley then. Hey, I'm just doing what you asked...
In all seriousness 4-player gameplay can turn even so-so and not so demanding games into power-hungry games. An i3-4130 should have no issue with Brawl, but I'm less confident about Double Dash, and pessimistic about MK Wii. I would not recommend anything that is 1) not Haswell or better, and 2) not overclockable if you want to guarantee that you'll get no slowdowns (at least noticeable ones) during your 4 player sessions. If you really don't want an i5-4670K, just wait until the Pentium Anniversary CPU comes out.
There's also the matter of the GPU. Brawl and Double Dash are pushovers as it concerns how demanding they are on the GPU. MKWii, not so much. What IR + AA do you ideally want to play at?